Eccentric.



No. 867,136. I PATENTED SEPT. 24, 1907 J. A. JACKSON.

.EGGENTRIG.

AYPLIOATION FILED JULY 9. 1906.

I I lllll llllllllllll." WIN Hill mu II x Null .1

'2 SHEETS-SHEET 1.

.No. 867,136. PATENTED SEPT. 24, 1907.

J. A. JACKSON. EGGENTRIG.

APPLIOATION FILED JULY 9. 1908.

' 2 SHEETS-SHEET 2.

To all whom it may concern.

- Application filed July 9,

.Be it known that I,- JAnEsA. Jac son, a citizen of the United States, residing at Iola,'in the county of Allen and State of Kansas, have invented certain new and useful Improvements in Eccentrics, of which the following is a specifications v This invention relates to shifting or changeable stroke I eccentrics adapted for useon plunger jigs for cleaning and concentrating walls, for shaking screens and the like; and one objectfof the invention is to provide a compact and efficient device whereby the throw of the eccentric may be changed while the machine is in operation, at the will of the operator; other objects of the invention are to simplify and improve the construction and operation of this class of devices.

With these and other ends in view'which will readily appear as the nature, of the invention is better understood, the same consists in the improved construction and novel arrangement and assemblage of parts which will be hereinafter fully described and particularly pointed out in the claims.

- In the accompanying drawings has been illustrated a for operation. Fig. 2 is a vertical sectional view taken on theplane indicated by the line 2-2 in Fig. 1 Fig, 3 is an end view, the shaft carrying the eccentric being shown in section. Fig. .4 is a sectional view of the sleeve or core carrying the eccentric and the adjusting means for the latter taken'longitudinally of the axis of said sleeve or core,"on the line 44 in Fig. 2. Fig. 5 is a transverse sectional view taken on the plane indicated by the line 5-5 in 4. Fig. 6 is a detail plan view showing the sleeve or core mounted upon the driving shaft, the eccentric and the adjusting wedges having been removed. Fig. 7 is a transverse sectional view taken onthe plane indicated by the'line 77 in Fig. 6. Fig. 8 is a detail end View, partly in section, showing the adjusting ring and the adjusting-keys or wedges, detached. Fig. 9 is a detail plan view, partly in section, of the parts shown in Fig. 8. Fig. 10 is a transverse sectional view of the eccentric disk, detached.

Corresponding parts in the several figures are denoted by like characters of reference Suitably mounted upon a shaft 1 is a sleeve or core A which, in the. preferred form illustrated in the'drawings, is composed of two parts or members 2 and 2( having spaced flanges 3- and 3 separably connected by means of bolts 4; the flange 3 of the member 2 being Specification of Letters Patent.

1906. serial No. 325,412.

JAMESA'. JACKSON, 0F IOLA, KANSAS.

Econn'rnrc.

Patented Sept. 24, 1907.

I provided with a spacing block 5 engaging a recess 6 inthe face of the opposing flange 3. The sleeve or core A r is provided on diametrically opposite sides with longitudinal grooves 7 extending also through the sides of the spacing block, and the flanges 3 and 3" are provided with slots 8 registering with saidgrooves. The latter afiord seats for the longitudinally slidable oppositely disposed wedges or keys -9'9 which operate through the slots 8 in the flanges of the sleeves, said keys or wedges being provided with stems or shanks 10 having laterally extending pins 11 that, engage diametrically opposite apertures in a ring 12 which is slidably dis posed upon the sleeve.

The eccentric consists of a disk 15 having a diametrical slot 16 which is suitably shaped for engagement with the spacing block 5 and the wedges 9,; said slot being provided with oblique end walls 17 as clearly shown in Fig. 10 of the drawings, for engagement with the oppositely disposed wedges; said eccentric disk being positioned between the flanges 3 and 3 of the sleeve members 2 and 2, and provided with slots 18 for the passage of the connecting'bolts 4; the eccentric is encircled by the usual band 19 from which a rod or pitman 20 extends to the part that is to be driven by said eccentric.

Suitable supports are to be provided affording bear- I ings for the shaft 1 and the sleeve A; one such support being shown at 21, the boxing 22 of which, forms a hearing in which the sleeve or core A is suitably supported for rotation, said sleeve being loose upon the shaft for rotation as will be readily understood. The boxing 22 is provided with laterally extending guide pins 23 extending through suitable apertures 24in a collar 25 which is clamped upon and securely connected with.

the adjusting ring 12 which slides longitudinally upon the sleeve or core as herein before described and isconnected with the adjusting keys or wedges. Pivotally whole is designated B, being provided at its free end with handles 27 and 27 each carrying a suitably operable engaging member such as a gravity pawl adapted for engagement with one of the series of apertures 29 in a quadrant bar or plate 30 connected.with the boxing 22. It will be seen'that there are two separate series of apertures at different distances from the fulcrum of the yoke B and adapted" to be engaged alternately by the engaging members 28. The opposite side members 26 of the yoke B are connected with the collar 25 by means of links 31 so that by manipulating the yoke B the collar 25 and the ,ring 12 may be moved longitudinally upon the sleeve or core A, thus effecting longitudinal adjustmentbf the keys or wedges 9 whereby the eccentric disk will be moved diametrically between the ,flanges- 3 and 3'; the part being retained in adjusted 20 thereby.

position by one of the engaging members 28 entering one of'the apertures29in the quadrant plate 30. By having the two'separateengaging members and the two sets of apertures in the quadrant, a very delicate adjustment may be effected without danger of the wedges or adjusting keys being moved too far since, when one of the members 28 is disengaged from the quadrant and the yoke B is moved in either direction, the other engagingmember will automatically enter 'into engagement With the next aperture adjacent thereto.

From the ioregoing description taken in-odnnection with the drawings hereto annexed, 'the operation and advantages of this invention will be. readily understood. The construction is simple and inexpensive,

I comprising :two longttudinaily grooved .and flanged memhers, ,one of said members dieing provided with a spacing block engaging a ,recQSB in ,the op osite flanged member, connecting bolts extending through the .flanges not said members, a diametrically slotted disk interposed between the flanges of the core members in slidahle engagement with .the spacing hloolr'and limiting slots engaging xthe ,con-

necting bolts, and wedge sbaped'a djusti'ng keys seated for longitudinal movement in the gro'oves of the core members, extending -thvough slots in the flanges of the latter and engaging the ends of the diametrical slot in the disk.

,2. ,In a. device of the class described u sleeve or core having spayed flanges and diametrically opposite longitudinal grooves, wedge shaped keys slidsbly mounted in the l longitudinal grooves and operating through slots in the flnnges,a diametrically slotted disk slidubly disposed between said flanges in engagement with the wedge shaped keys, there being stems or shanks extending from the keys and having lugs, 21 slidable ring mounted upon the .sleeve .or core and having apertures engaging saidlugs, a collar clamped upon the sliding ring and having longitudinal apertures, 11 fixed support or hearing, guide 'membersex-tending from the latter through the apertures of :the clamping collar, ,an adjusting yoke, and links connecting the latter with .the clamping collar.

3. In a device .of'the class described, a sleeve or core having spaced flanges and longitudinally sliduble adjust ingdreysor wedgesoperatlng through slots =ln lthe flanges, adiametricallyslotted.dlsk interposed between the .flungos in engagement'with the .wedgea means, includlngaplvotcd yoke, for effecting longitudinal adjustment of the wedges, a supporting member having a quadrant plate provided with two separate sots-of apertures, uud separate engaging members carried by the yoke dor alternate engagement with the apertures in he uadrant plate.

In testimony whereof I radix my signature in .the presence of two witnesses.

JAMES A. JACKSON.

Witnesses U. 13. STING, Louis CLA-XTON. 

